JANESVILLE, Wis. (AP) – Wildlife officials are encouraging hunters in southern Wisconsin to have deer tested for chronic wasting disease amid signs the illness is increasing. The Janesville Gazette reports testing is not required but is being encouraged when hunters register their deer. Marci McCarten says nearly every hunter who has come into her bait shop in Janesville has opted to have his or her animal tested for the disease. DNR biologist Julie Widholm says the agency hopes to get 500 deer tested in and around Rock County as part of its effort to track CWD. CWD is a mad-cow-like brain disease that can be fatal to deer.